Helmet



FIG. 1 is a front-top-right perspective view of a helmet.

FIG. 2 is a front view of the helmet of FIG. 1.

FIG. 3 is a rear view of the helmet of FIG. 1.

FIG. 4 is a right view of the helmet of FIG. 1.

FIG. 5 is a left view of the helmet of FIG. 1.

FIG. 6 is a top view of the helmet of FIG. 1; and,

FIG. 7 is a perspective view showing a face shield of the helmet of FIG. 1 being lifted-up in an alternate position. 

CLAIM We claim the ornamental design for a helmet, as shown and described. 